After the power is switched on, it is not vibrating. It is necessary to check whether the fuse of the electrical controller is disconnected, whether the electrical components are loosened, and whether the plug socket is in poor contact. If the conveying speed does not meet the requirements, pay attention to the following three points;

1. Check if the screws that fasten the elastic elements are loose.

2. The spring is broken.

3. The electromagnetic gap is too large, and the normal gap corresponds to the distance between the electromagnet and the armature of the small vibration plate in the range of 0.5 MM to 1.2 MM. Iron core and non-parallel azimuth work surface is not greater than 0.02MM.